perf(gltf): add skinning cache — skip re-skinning when pose is unchanged

src/main/java/com/tiedup/remake/client/gltf/GltfClientSetup.java

@@ -96,6 +96,7 @@ public final class GltfClientSetup {
                         ProfilerFiller profiler
                     ) {
                         GltfCache.clearCache();
+                        GltfSkinCache.clearAll();
                         GltfAnimationApplier.invalidateCache();
                         GltfMeshRenderer.clearRenderTypeCache();
                         // Reload context GLB animations from resource packs FIRST,
@@ -120,4 +121,24 @@ public final class GltfClientSetup {
         }
     }
 
+    /**
+     * FORGE bus event subscribers for entity lifecycle cleanup.
+     * Removes skin cache entries when entities leave the level, preventing memory leaks.
+     */
+    @Mod.EventBusSubscriber(
+        modid = "tiedup",
+        bus = Mod.EventBusSubscriber.Bus.FORGE,
+        value = Dist.CLIENT
+    )
+    public static class ForgeBusEvents {
+
+        @SubscribeEvent
+        public static void onEntityLeaveLevel(
+            net.minecraftforge.event.entity.EntityLeaveLevelEvent event
+        ) {
+            if (event.getLevel().isClientSide()) {
+                GltfSkinCache.removeEntity(event.getEntity().getId());
+            }
+        }
+    }
 }